The Jones-Dole viscosity B-coefficients for various mono-, di-, and tri-saccharides in water and in (0.5, 1.0, 2.0, and 3.0) mol . kg(-1) aqueous solutions of sodium acetate have been determined at different temperatures, T = (288.15, 298.15, 308.15, and 318.15) K from viscosity data. Densities used to determine viscosities have been reported earlier. The viscosity B-coefficients of transfer, Delta B-t, has been estimated for the transfer of saccharides from water to aqueous sodium acetate solutions. The positive Delta B-t values were obtained in all cases and their magnitudes increase with the increase in concentration of sodium acetate. Pair, eta(AB) and higher order, eta(ABB) viscometric interaction coefficients (using McMillan-Mayer theory), and dB/dT coefficients have also been determined. Activation Gibbs free energies and other related thermodynamic activation parameters of viscous flow have been determined using Feakin's transition-state theory. These parameters have been discussed in terms of solute-solute and solute-solvent interactions occurring in these solutions. (C) 2010 Elsevier Ltd. All rights reserved.